Results 101 to 110 of about 423,698 (234)

Progesterone-based estrous synchronization protocols in non-suckled and suckled primiparous Bos indicus beef cows

open access: yes, 2010
In Experiment 1, effects of an intravaginal progesterone insert (CIDR) for synchronization of estrus in non-suckled cycling primiparous Bos indicus beef cows were evaluated.
Sa Filho, O. G.   +6 more
core   +1 more source

Long-term Recordings of Arcuate Nucleus Kisspeptin Neurons Across the Mouse Estrous Cycle

open access: yesEndocrinology
The arcuate nucleus kisspeptin (ARNKISS) neurons represent the GnRH pulse generator that likely drives pulsatile gonadotropin secretion in all mammals. Using an improved GCaMP fiber photometry system enabling long-term continuous recordings, we aimed to ...
S. Vas   +5 more
semanticscholar   +1 more source

[Endocrine mechanisms of the synchronization of the estrous cycle in sheep].

open access: yesProblemy endokrinologii, 1989
Prostaglandin of the F2-alpha group (estrophan) led to a sharp decrease in serum progesterone concentration of 90-96% of Edibai female sheep eliminating the blocking hypothalamic center effect of the endogenous steroid hormone. The resultant conclusion was a possibility of artificial insemination of the above number of female sheep without finding out ...
, Amarbaev A-ShM   +3 more
openaire   +1 more source

Effects of Estrous Synchronization of Bali Cattle Using PGF2a

open access: yes, 2014
The aim of the study was to investigate response, behavior, cycle of estrous and estrogen hormone profile of Bali cattle (Bos sondaicus) which were synchronized by PGF2a.
Kustono, Kustono   +2 more
core  

Ictal activity is sustained by the estrogen receptor β during the estrous cycle

open access: yesCurrent Research in Neurobiology
Catamenial epilepsy, defined as a periodicity of seizure exacerbation during the menstrual cycle, affects up to 70 % of epileptic women. Seizures in these patients are often non-responsive to medication; however, our understanding of the relation between
Fei Ran Li   +5 more
semanticscholar   +1 more source

Reproductive physiological outcomes of dairy cows with different genomic merit for fertility: biomarkers, uterine health, endocrine status, estrus features, and response to ovarian synchronization.

open access: yesJournal of Dairy Science
Our overarching objective was to characterize associations between genomic merit for fertility and the reproductive function of lactating dairy cows in a prospective cohort study.
E. Sitko   +7 more
semanticscholar   +1 more source

Plasma progesterone concentrations in Toggenburg goats submitted to estrous synchronization reusing autoclaved intravaginal progesterone devices. [PDF]

open access: yes, 2019
: The aim of this study was to evaluate plasma P4 concentration in Toggenburg goats receiving autoclaved progesterone devices for estrous synchronization.
TORRES, C. A. A.   +6 more
core  

New Tools for Estrous Synchronization – Costs and Benefits

open access: yes, 2003
Estrous synchronization has become a powerful tool in managing breeding seasons to compliment niche markets. Synchronization of estrus, along with the use of AI, has become a popular technology that can introduce new sire genetics along with control of ...
Zalesky, Doug D., Walker, Ryon S.
core  

A Comparison of Three Estrous Detection Management Schemes for Dairy Heifers

open access: yes, 1990
Heifers should represent the greatest genetic potential within a dairy herd. To maximize this potential, heifers must be inseminated to proven sires, a practice requiring management changes on many dairies.
Lagerstedt, Ann
core   +1 more source

A Novel Estrous Synchronization Program for Beef Cattle Using Melengestrol Acetate

open access: yes, 1998
Estrous synchronization rate and conception and pregnancy rates to AI were evaluated following three estrous synchronization protocols for beef cattle. During 1995 and 1996, heifers and cows (n = 379) received either: 1) melengestrol acetate (MGA) for 18
Melvin, Eric   +8 more
core  

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